If your destination is east of Village Center Drive (shown in blue), use Yorba Linda Boulevard/Weir Canyon Road from the Riverside Freeway to get to and from your destination. If your destination is west of Village Center, use Imperial Highway to the greatest extent possible to get to and from your destination.
Mouth ulcers are caused by many disorders. These include: 1  Canker sores. 2  Gingivostomatitis. 3  Herpes simplex (fever blister). 4  Leukoplakia. 5  Oral cancer. 6  Oral lichen planus.
Aphthous mouth ulcers. Aphthous mouth ulcers are painful sores that can occur anywhere within the mouth and are common on the underside of the tongue. Many mouth ulcers are caused by damage to the mouth, such as from accidentally biting your tongue or eating something hard and sharp.